Colt gun.



No. 680,327. Patented Aug. l3, I901.

W. G. HAY.

COLT GUN.

(Application filed. Oct. 24, 1900.) (No Model.)

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{WITNESSES INVE'NTOR UNITED STATES PATENT OFFICE.

lVILLIAM Gr. HAY, OF LIVERPOOL, ENGLAND.

COLT GUN.

SPECIFICATION forming part of Letters Patent No. 680,327, dated August13, 1901. Application filed October 24, 1900. fleriel No. 34,148. (Nomodel.)

To all whom it may concern.-

Be it known that I, WILLIAM GEORGE HAY, a citizen of England, residingat 201 Northill street, Liverpool, in the county of Lancaster,

England, have invented certain new and usef ul Improvements in Colt Gunsor other Guns in which the Lock Mechanism is \Vorked by Lateral Escapeof Gas, (for which I have applied for a patent in Great Britain, datedJuly 10, 1900, No. 12,426,) of which the following is a specification.

My invention relates to means of adapting 'for blank firing a Colt gunor. other gun the lock mechanism of which is worked by lateral escape ofgas. This is effected as will be described with reference to theaccompany' ing drawing, in which the figure is a longitudinal sectionshowing the front portion of a Colt gun, showing in elevation the0perating-lever, which is worked by lateral escape of gas.

On the muzzle of the gun is screwed a sleeve a, having several lateralholes I), and is screwthreaded to receive a fiat-ended setting sc'rew 0,provided with a lock-nut d. This screw is adjusted with its end so closeto the muzzle as to throttle the outlet there sufficiently to causewithin the barrel in blank firing the,

pressure of powder-gas necessary to work the lock-operating lever e inthe same manner as when a bullet passes along the here. The degree ofthrottling for this purpose can be ascertained by trial, and the screw 0being once adjusted is prevented from shifting by the lock-nut d. Inorder to suit the cartridge for blank fire to the lock mechanism, it maybe gas within the bore, have a piston or plunger so acted on, and forthese guns blank-fire cartridges with wooden plugs, as above described,can obviously be employed.

Having thus described the nature of this in- J venti'on and the bestmeans I know for carrying the same into practical effect, I claim- 1.The combination'with a gun having lock mechanismarrangedto be operatedby lateral escape of gas, of a cap secured to the muzzle andhaving agas-passage through it and means for regulating the escape of gasthrough said passage; substantially as described.

- 2. In combination with a Colt or other gun having its lock mechanismworkedby lateral escape of gas, a sleeve screwed on the muzzle withlateral passage and an adjustable throttling-screw for causingsufficient gas-pressure in the bore to work the lock mechanism in blankfiring, substantially as described.

, In testimony whereof I have hereunto set my'hand in presence of twosubscribing wit- UGSSGS.

W. G. HAY.

Witnesses;

GERALD L. SMITH, EDWARD GARDNER.

